Work found, with species-group names introduced therein:
Odé, H. 1993e. Distribution and records of the marine Mollusca in the northwest Gulf of Mexico (a continuing monograph). Texas Conchologist 30 23-32. [Stated date: -- Dec 1993.] Fargoa gaudens Pselliogyra varia, see Parthenina varia (Odé, 1993)